Diesel engine glow plug with self-temperature saturation charact

Details Diesel engine glow plug with self-temperature saturation charact Diesel engine glow plug with self-temperature saturation charact

1990-01-04

1991-08-13

Bartis, Anthony

Electric heating

Heating devices

Resistive element: igniter type

123145A, 219544, 219553, F02P 1902, F23Q 722, H05B 300

Patent

active

050398393

ABSTRACT:
A glow plug for a diesel engine includes a first resistor serving as a heating element, second and third resistors, a sheath which incorporates the first, second, and third resistors, a heat-resistant insulating powder filled in the sheath to insulate the first, second, and third resistors from each other, and a cylindrical housing for holding the sheath. The second and third resistors are connected in series with the first resistor, are made of a material having a positive resistance-temperature coefficient, and have a positive resistance-temperature coefficient larger than that of the first resistor. The heat capacity of a given sheath portion having the third resistor therein is set larger than that of the other sheath portions.

REFERENCES:
patent: 4556781 (1985-12-01), Bauer
patent: 4636114 (1987-01-01), Itoh et al.
patent: 4725711 (1988-02-01), Minegishi et al.
patent: 4733053 (1988-03-01), Mueller

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